Normal Mode Turn-Off Procedures (Parallel) - Delta DPH series User Manual

6.3.5 Normal Mode Turn-off Procedures (Parallel)

NOTE:
If you wish to turn off one of the paralleled UPSs and the UPS has the rack-
mount PDC (optional; at maximum two) installed, please depend on the actual
requirements to decide whether the breakers of the hot-swappable breaker
modules installed in the UPS's rack-mount PDC need to be turned off or not. After
that, follow the UPS turn-off procedures below. All symbols relevant to the rack-
mount PDC will show at the upper left corner of the LCD; please refer to 6.1 Pre-
operation Warnings.
Press the OFF button of one of the parallel UPSs for 3 seconds and release it after you
hear a beep. The LCD shows the message: "SHUTDOWN UPS?". Select "YES" and press
key WR FRQ¿UP \RXU VHOHFWLRQ (LWKHU VLWXDWLRQ $ RU % PLJKW RFFXU
the
A. If the remaining parallel UPSs' total capacity exceeds the total critical loads, the inverter
of the UPS that you turned off will automatically shut down, and the critical loads will be
shared equally by the remaining parallel UPSs.
The LCD status for the UPS that you turned off:
The LCD status for each of the remaining parallel UPSs:
U NIT:#1. 1
LOAD NOT POWERED
BYPA.
MAIN
PRESS TO BROWSE EVENT
F1 :
U NIT:#1. 1
LOAD PROTECTED
ON LINE
BYPA.
MAIN
PRESS TO BROWSE EVENT
F1 :
6 - 2 5
6
2 0 1 2 - 0 1 - 2 0
1 5 : 5 5 : 0 0
(004)
F2 :
2 0 1 2 - 0 1 - 2 0
1 5 : 5 5 : 0 0
(004)
F2 :
UPS Operation